Method for creating triticale new germplasm resources based on distant hybridization technology

Abstract

The invention belongs to the technical field of wheat breeding, and discloses a method for creating triticale new germplasm resources based on a distant hybridization technology. The method comprises the steps that Polish wheat and common wheat are selected to hybridize to obtain a first generation F1 sterile line; the first generation F1 sterile line is hybridized with the common wheat to obtain a second generation F1 sterile line; the second generation F1 sterile line is hybridized with the common wheat to obtain a third generation F1 sterile line; the second generation F1 sterile line is hybridized with hard-grained wheat to obtain a third generation F1 sterile line; and the third generation F1 sterile line is hybridized with triticale, the fourth generation F1 sterile line is divided into fertility and sterility, the next generation of seeds is harvested in a mixed mode, the F2 generation has a sterile line and further has a fertile triticale selective line, and new germplasm resources are bred through system breeding of the fertile line of the triticale. According to the method for creating the triticale new germplasm resources based on the distant hybridization technology, favorable genes of wheat sibling species and wheat materials with different genetic backgrounds are successfully polymerized to the new triticale germplasm through distant hybridization, so that the comprehensive resistance and adaptability of triticale are improved, and the yield, resistance, quality and adaptability of triticale are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of wheat breeding, and in particular relates to a method for creating new triticale germplasm resources based on distant hybridization technology. Background technique [0002] Distant hybridization refers to the offspring produced by hybridization between different species, subspecies, genus, families or even species with more distant blood relations. Hybridization is also a distant hybridization. Distant hybridization has multiple advantages. On the one hand, the use of distant hybridization technology can greatly increase the variation diversity of crops and provide a basis for future breeding work; on the other hand, the introduction of cytoplasmic male sterility genes through distant hybridization technology Male sterile lines and maintainer lines of various crops can be created, which greatly simplifies the difficulty and workload of breeding work. In addition, in the process of distant hybridization...

AI Technical Summary

Problems solved by technology

The predecessors generally screened the field traits of black wheat varieties in the later stage of breeding, and it was difficult to achieve the expected goal

Images